Template of contributing guidelines for Cefriel repositories. Add to the README of the repositories the following Markdown content.
### Contributing
Before contributing, please read carefully, complete and sign our [Contributor Licence Agreement](https://github.com/cefriel/contributing/blob/main/contributor-license-agreement.pdf).
When contributing to this repository, please first discuss the change you wish to make via issue or any other available method with the repository's owners.